The Lib Dems will be looking to recover ground lost in the 2015 general election, when they were left with just eight MPs.

The party has since gained a Parliamentary seat from the Conservatives in Richmond in London and is hoping to tempt pro-Remain supporters with a promise of a referendum on the terms of the Brexit deal.

Mr Farron claimed his party was the only one capable of prevent an overall Conservative majority.

He said his party would fight to stay in the single market, which Mrs May has said the UK will be leaving when it leaves the EU.